Iozone: Performance Test of File I/O Version $Revision: 3.483 $ Compiled for 64 bit mode. Build: linux-AMD64 Contributors:William Norcott, Don Capps, Isom Crawford, Kirby Collins Al Slater, Scott Rhine, Mike Wisner, Ken Goss Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain CYR, Randy Dunlap, Mark Montague, Dan Million, Gavin Brebner, Jean-Marc Zucconi, Jeff Blomberg, Benny Halevy, Dave Boone, Erik Habbinga, Kris Strecker, Walter Wong, Joshua Root, Fabrice Bacchella, Zhenghua Xue, Qin Li, Darren Sawyer, Vangel Bojaxhi, Ben England, Vikentsi Lapa, Alexey Skidanov, Sudhir Kumar. Run began: Tue Apr 1 04:02:35 2025 Auto Mode Machine = Linux oleg630-client.virtnet 4.18.0rh8.10-debug #7 SMP Sat Jan 18 21 Excel chart generation enabled Excel chart generation enabled Verify Mode. Pattern dbdbdbdb Performance measurements are invalid in this mode. Using maximum file size of 102400 kilobytes. Using Maximum Record Size 512 kB Command line used: iozone -a -M -R -V 0xab -g 100M -q 512k -i0 -i1 -f /mnt/lustre/d4.lustre-rsync-test/d0.iozone-oleg630-client.virtnet/iozone-file Output is in kBytes/sec Time Resolution = 0.000001 seconds. Processor cache size set to 1024 kBytes. Processor cache line size set to 32 bytes. File stride size set to 17 * record size. random random bkwd record stride kB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread 64 4 2955 2259 119847 151247 64 8 2056 18034 246089 310759 64 16 2970 30131 423529 357529 64 32 5789 41235 555990 363337 64 64 9283 57189 926260 789967 128 4 4637 8706 90263 150941 128 8 9980 18787 345075 274641 128 16 8971 16554 429563 384356 128 32 11611 50199 618653 460514 128 64 13620 60747 289604 780556 128 128 10688 19959 183369 347083 256 4 2249 5414 166761 143648 256 8 12030 16909 292269 229392 256 16 17867 14863 256519 99569 256 32 9375 40973 636930 551540 256 64 13008 18750 693718 680960 256 128 8345 85191 999940 934659 256 256 19180 91821 996229 1471270 512 4 1750 2791 190416 58115 512 8 8271 11983 293259 119765 512 16 15621 8969 456735 263081 512 32 19507 11255 691887 570258 512 64 10374 24441 887461 248787 512 128 8826 54677 1023680 893368 512 256 21760 94027 1026126 1051242 512 512 11351 25647 807383 658776 1024 4 3161 3608 166938 49564 1024 8 9871 10023 289675 114298 1024 16 8168 14131 489521 414539 1024 32 16673 10394 642400 552918 1024 64 27172 49103 838565 684914 1024 128 19492 36486 996094 754057 1024 256 37720 75122 495679 808113 1024 512 11229 53277 1175799 574285 2048 4 2470 6413 43035 30423 2048 8 11536 5066 167129 203597 2048 16 8418 9064 81890 158758 2048 32 10919 11341 501344 319996 2048 64 11482 32086 921686 779853 2048 128 10432 17209 504287 833585 2048 256 14726 27944 1260296 1001881 2048 512 15111 63143 968337 1086397 4096 4 3136 3000 58024 61874 4096 8 8096 6041 52637 70871 4096 16 11944 13195 200402 120131 4096 32 11465 8997 388133 483139 4096 64 10604 11662 490715 476784 4096 128 10615 25466 351500 479726 4096 256 16988 22427 341305 103620 4096 512 17134 42172 226200 652859 8192 4 2743 4206 45195 62589 8192 8 4046 6346 266163 233184 8192 16 6895 8509 308295 413988 8192 32 12781 17469 196747 489393 8192 64 11362 15807 506304 338947 8192 128 14217 21300 383698 746288 8192 256 18635 22037